Nearshore Marine Forecast
Issued by NWS Duluth, MN
Issued by NWS Duluth, MN
060 FZUS53 KDLH 200224 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 924 PM CDT Tue Aug 19 2025 For waters within five nautical miles of shore on Lake Superior. Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. LSZ140-141-201015- Grand Portage to Grand Marais MN- Grand Marais to Taconite Harbor MN- 924 PM CDT Tue Aug 19 2025 .REST OF TONIGHT...Northeast wind 5 knots. Patchy fog after midnight. Waves 1 foot or less. .WEDNESDAY...North wind 5 knots becoming east late in the morning, then becoming south in the afternoon. Areas of dense fog in the morning. Waves 1 foot or less. .WEDNESDAY NIGHT...Southwest wind 5 knots becoming west after midnight. Patchy fog in the evening. Waves 1 foot or less. .THURSDAY...Southwest wind 5 knots becoming south in the late morning and afternoon. Patchy fog in the morning. Waves 1 foot or less. $$ LSZ142-143-201015- Taconite Harbor to Silver Bay Harbor MN- Silver Bay Harbor to Two Harbors MN- 924 PM CDT Tue Aug 19 2025 .REST OF TONIGHT...Northeast wind 5 knots. Patchy fog after midnight. Waves 1 foot or less. .WEDNESDAY...Northeast wind 5 knots becoming southeast in the afternoon. Areas of dense fog in the morning. Waves 1 foot or less. .WEDNESDAY NIGHT...Northeast wind 5 knots becoming north after midnight. Patchy fog. Waves 1 foot or less. .THURSDAY...Variable winds 10 knots or less becoming southeast 5 knots in the late morning and afternoon. Patchy fog in the morning. Waves 1 foot or less. $$ LSZ144-145-201015- Two Harbors to Duluth MN-Duluth MN to Port Wing WI- 924 PM CDT Tue Aug 19 2025 .REST OF TONIGHT...Northeast wind 5 knots. Patchy fog in the late evening and early morning, then areas of dense fog toward daybreak. Waves 1 foot or less. .WEDNESDAY...Northeast wind 5 knots. Areas of dense fog in the morning. Waves 1 foot or less. .WEDNESDAY NIGHT...East wind 5 knots. Patchy fog through the night. Waves 1 foot or less. .THURSDAY...Southeast wind 5 to 10 knots. Patchy fog. Waves 1 foot or less. $$ LSZ146-201015- Port Wing to Sand Island WI- 924 PM CDT Tue Aug 19 2025 .REST OF TONIGHT...Northeast wind 5 knots. Patchy fog in the late evening and early morning. Areas of dense fog toward daybreak. Waves 1 foot or less. .WEDNESDAY...Northeast wind 5 knots. Areas of dense fog in the morning. Waves 1 foot or less. .WEDNESDAY NIGHT...East wind 5 knots becoming southeast early in the morning. Patchy fog. Waves 1 foot or less. .THURSDAY...Variable winds 10 knots or less becoming southeast 5 knots late in the morning, then becoming east in the afternoon. Patchy fog in the morning. Waves 1 foot or less. $$ LSZ147-201015- Sand Island to Bayfield WI- 924 PM CDT Tue Aug 19 2025 .REST OF TONIGHT...Northeast wind 5 knots. Patchy fog after midnight. Areas of dense fog toward daybreak. Waves 1 foot or less. .WEDNESDAY...Northeast wind 5 knots becoming east late in the afternoon. Areas of dense fog in the morning. Waves 1 foot or less. .WEDNESDAY NIGHT...East wind 5 knots early in the evening becoming variable 10 knots or less, then becoming southeast 5 knots after midnight. Patchy fog after midnight. Waves 1 foot or less. .THURSDAY...South wind 5 knots becoming east in the afternoon. Patchy fog in the morning. Waves 1 foot or less. $$ LSZ150-201015- Outer Apostle Islands Beyond 5 NM from Mainland- 924 PM CDT Tue Aug 19 2025 .REST OF TONIGHT...Northeast wind 5 knots. Patchy fog after midnight. Waves 1 foot or less. .WEDNESDAY...Northeast wind 5 knots becoming east late in the afternoon. Patchy fog in the morning. Waves 1 foot or less. .WEDNESDAY NIGHT...East wind 5 knots. Patchy fog through the night. Waves 1 foot or less. .THURSDAY...South wind 5 knots becoming east late in the afternoon. Patchy fog. Waves 1 foot or less. $$ LSZ121-201015- Chequamegon Bay-Bayfield to Oak Point WI- 924 PM CDT Tue Aug 19 2025 .REST OF TONIGHT...Northeast wind 5 knots. Patchy fog after midnight. Waves 1 foot or less. .WEDNESDAY...Northeast wind 5 knots. Areas of dense fog in the morning. Waves 1 foot or less. .WEDNESDAY NIGHT...East wind 5 knots in the evening becoming variable 10 knots or less, then becoming south 5 knots early in the morning. Patchy fog through the night. Waves 1 foot or less. .THURSDAY...Variable winds 10 knots or less becoming south 5 knots in the late morning and early afternoon, then becoming southeast late in the afternoon. Patchy fog. Waves 1 foot or less. $$ LSZ148-201015- Oak Point to Saxon Harbor WI- 924 PM CDT Tue Aug 19 2025 .REST OF TONIGHT...Northeast wind 5 knots. Patchy fog in the late evening and early morning, then areas of dense fog toward daybreak. Waves 1 foot or less. .WEDNESDAY...Northeast wind 5 knots. Patchy fog in the morning. Waves 1 foot or less. .WEDNESDAY NIGHT...East wind 5 knots becoming south early in the morning. Patchy fog through the night. Waves 1 foot or less. .THURSDAY...South wind 5 knots becoming southeast in the afternoon. Patchy fog. Waves 1 foot or less. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes Rothstein